## Abstract We consider a string stretched between two diagonal branes on a bosonic torus under a perturbation of one of the radii. In the world‐sheet description, this corresponds to a perturbation of a conformal field theory with two boundary components. A term in the second order boundary RG equ
Higher order perturbation theory for exponential Lagrangians: Third order
✍ Scribed by K. Pohlmeyer
- Publisher
- Springer
- Year
- 1972
- Tongue
- English
- Weight
- 832 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0010-3616
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
I review techniques and applications of higher-order perturbation theory for highly-improved lattice actions.
## Abstract Based on a partitioning of the total correlation energy into contributions from parallel‐ and antiparallel‐spin pairs of electrons, a modified third‐order Møller–Plesset (MP) perturbation theory is developed. The method, termed SCS–MP3 (SCS for spin‐component‐scaled) continues previous
A general canonical Hamiltonian approach for singular Lagrangians with arbitrary order of time derivatives on the fields is presented. The BRST generator and the effective action is constructed. The formalism is applied to the analysis of the rigid string. The complete algebra of first class constra